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3 years ago

Cynthia drove 288 miles in 4 1/2 hours. What was her speed in miles per hour?

Mathematics

1 answer:

a_sh-v [17]3 years ago

8 0

4*1/2=2
288/2
144
her speed was 144 miles per hour

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112

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3 years ago

Carey bought 8 tickets for $52 how many tickets could she buy for $90?

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73.13

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ANSWER

As given in question

plant’s height = 37 centimeters

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3 years ago

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The midpoint of AB is M(1, 3). If the coordinates of A are(4,1), what are the coordinates of B?

Oxana [17]

Answer:

B(-2,5)

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$\frac{x + 4}{2} = 1 \\ 2 \times \frac{x + 4}{2} = 1 \times 2 \\ x + 4 = 2 \\ x = 2 - 4 \\ x = - 2 \\ \frac{y + 1}{2} = 3 \\ 2 \times \frac{y + 1}{2} = 3 \times 2 \\ y + 1 = 6 \\ y = 6 - 1 \\ y = 5$

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2 years ago

Find the average rate of change for the function f(x) =x^2 -6x+2 on the closed side interval (-5,2)

s344n2d4d5 [400]

Answer:

- 9

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

$\frac{f(b)-f(a)}{b-a}$

Here [a, b ] = [ - 5, 2 ], thus

f(b) = f(2) = 2² - 6(2) + 2 = 4 - 12 + 2 = - 6

f(a) = f(- 5) = (- 5)² - 6(- 5) + 2 = 25 + 30 + 2 = 57 , thus

average rate of change = $\frac{-6-57}{2-(-5)}$ = $\frac{-63}{7}$ = - 9

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2 years ago